Phonograph



(No Model.)

J. P. MAGBNIS.

PHONOGRAPH. No. 432,886.

PatentedvJuly 22, 1890. 271,

ss i A TTHIVEYS,

UivrrED STATES PATENT OEErCE.

JAMS P. MAGENIS, OF NORTH ADAMS, MASSACHUSETTS.

PHONOGRAPH.

SPECIFICATION forming' part 0f Letters Patent N0. 432,886, dated July 22, 1890. Application iiled November 14, 1889. Serial No. 330,510. (No model.)

To all whom it may concern:

Be it known that I, JAMES P. MAGENIS, of North Adams, in the county of Berkshire and State of Massachusetts, have invented a new and Improved Phonograph, of which the following is a specification, reference being had to the annexed drawings, forming a part thereof, in which- Figure 1 is a plan view of my improved phonograph. Fig.2 is aside elevation. Fig. 3 is a vertical transverse section taken on line in Fig. 2, and Figl is a sectional view of a double diaphragm-cell.

Similar letters of reference indicate corresponding parts in all the views.

The object of my invention is to provide a phonograph in which a record may be made upon two cylinders simultaneously, so that one may be retained as a file, or so that a message may be repeated from one cylinder to another.

The invention consists in the particular construction and arrangement of parts, as

1) b are fitted shafts e e', which are reduced in diameter, forming shoulders ff', prolonged through the ends of the sleeves and furnished with wheels g g. Between the shoulders of the shafts e c and the outer ends of the sleeves b b are placed spiral springs 71, 7L. Theinner ends of the shafts e e are furnished with iianges d2 cl3, which are t-ted to the ends of the recording-cylinders B B', and are held in place therein by the springs h 7L. Below the middle of the space between the two cylinders B B is arranged a V-shaped track C, and at the rear of the machine there is a round rod D, which is parallel with the cylinders B B and a screw E is journaled in the frame Abehind the rodD and parallel with it. Upon the rod D is supported and guided an arm F,

which is prolonged beyond the said rod D,

curved upwardly and provided with a halfnut t', which lits the screw E. The arm F supports a V-shaped double diaphragm-cell G, which extends downwardly between the cylinders B B and is provided with two wheels j, which run in the groove of the V-shaped track C and support the diaphragm-cell at the required height. The diaphragm-cell G is provided with two cavities c lo', in which are secured diaphragms Z l. Each diaphragm is provided with a contact-point m for recording and reproducing, one for contact with the cylinder B,the other for contact with the cylinder B. The cavities 7o k communicate with the interior of the diaphragm-cell by curved passages mand the top of the diaphragm-cell is provided with tubes o o', to each of which is fitted a iiexible pipe p, terminating in a fla-ring end q, which answers the double purpose of a mouth-piece and ear-piece. Each daring end q is provided with a curved wire fr, adapted to be hooked over the ear for supporting the tube p in the position of use. The

-arm F is prolonged beyond the diaphragmcell G, forming an index s, which travels over a scale t, secured in the main frame A.u

In the lower part of the main frame A is arranged a casing u for receiving the drawer o, in which are'stored the record-cylinders.

On the top of the casing u is placed a trayw for receiving the chips cut from the cylinders B B by the recording and reproducing points m. The shaft c is provided with a pulley H, which receives its power through the belt I, and upon the said shaft are also placed the pulleys .I K. A belt L runs over the pulley J and over a pulley M on the shaft c toimpart motion to the cylinder B A belt N runs over the pulley K on the shaft c and over a pulley O on the end of the screw E. Sounds uttered into the diaphragm-cell G, either directly or through the iiexible pipe p, cause the diaphragms Z Z to vibrate and make a record upon their respective cylinders B B', the arm F and diaphragm-cell G being carried along by the screw E. By lifting the diaphragm-cell G so as to remove the points m from the cylinders B B the half-nut i is disengaged from the screw E, when the diaphragm-cell G may be readily carried back IOO to the point of starting and lowered into the position of use, bringing the half-nut i' again into engagement with the screw E, when the indentations or engraving made by the points m on the cylinders will cause the diaphragms to vibrate and reproduce the sounds originally uttered into the diaphragm-cell.

The diaphragm-cell shown in Fig. t is provided with a central partition, Which divides the cell into two compartments, thus permitting of the use of the diaphragms and recording and reproducing cylinders separately. This construction permits of listening to the record on one cylinder and simultaneously therewith dictating a reply -to the other cylinder. It also allows two persons to dictate at the same time. It is also possible to ren, produce two like messages simultaneously,

thereby greatly increasing the volume of sound. l

If desired,a cylinder bearing a record may be placed in the phonograph, together with another cylinder having no record, and the record may be reproduced on the plain cylinder, While at the same time the operator may listen. In this case it is necessary to employ the diaphragm-cell shown "in Fig. 3.

Having thus described my invention, I claim as new and .desire to secure by Letters Patent- In a phonograph, the combination of the lrecord-cylinders B B the mouth-piece G, furnished with the diaphragms l Z', having tracing-points m, the arm F, provided With the half-nut i, the rod D, the track C, adapted to support the month-piece in`the positionof use, and the feeding-screw E, substantially as specified.

JAMES P. MAGENIS. Witnesses:

S. SMITH JOY, WILLIAM P. MCKENNA. 

